Any way to get MSM eye drops in US...

other than by making myself?

I have one eye that really benefits from my MSM supplementation, but other internal parts are a bit more sensitive to the extra sulfur. I have been using molybdenum which has helped to greatly increase my tolerance, but I don't want to overdo it and end up having to stop the MSM for an extended period of time again.

I have read about the MSM eye drops, and would really like to try it. However, I have also read that the FDA has pulled it from the shelves. Is there a reliable online store that I can order from? I use iherb.com, but they don't carry it. And reliability is key as I do not like ordering online a lot. Plus, I want to be sure the product is pure and safe.